page28 seems to be out of place, its placed after the end page and before the translator note
also the part talkin with Saike also had some that were flipped? I tried using all three method (single, double, long strip), all showin page28 out of order
edit: Seems more of a epilogue than oneshot, wonder why they name it so.
forgot to mention but thank you for translating this series, I am glad i finally get to finish reading this
In the group photo on page 29, you can see a man's face in the top right, under Miki's hand. I'm guessing that's the author, Akira Nagai, who died two years into the series, leaving the artist, Nogizaka Tarou, to finish it.